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A two-stage 10 tons NH3 refrigeration plant with shell and coil type flash intercooler is operating at the following conditions: condensation temperature 35° C, evaporator temperature -40° C, interstage pressure 2.91 bar, sub cooling of liquid in flash intercooler 30° C, thermostatic expansion valve setting 5° c super heat. Assuming that the vapors living the LP compressor are intercooled to 40° C by water before entering the flash chamber determine: 1 refrigerant mass flow rate in evaporator
2.refrigerant mass flow rate through HP compressor
3. total power consumption
4. total power consumed in a single stage NH3 plant for the same duty. state what are the advantages of using flash intercooler intercooler in comparison to single States system
